2017. An Experimental Investigation on NOx Emission Reduction and Performance Evaluation of CI Engine using EGR System. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) DOI: 10.31695/IJERAT. 3, 7 (Jul. 2017), 01–16. DOI:https://doi.org/10.7324/IJERAT.2017.32475.